[PATCH v4 6/7] PCI: mediatek: Add controller support for mt2712 and mt7622

From: honghui.zhang
Date: Thu Aug 10 2017 - 02:35:38 EST

From: Ryder Lee <ryder.lee@xxxxxxxxxxxx>

MT2712 and MT7622 using a new IP block of Gen2 controller which has two
root ports and shares the same probing flow with MT2701/MT7623.

Both MT2712 and MT7622 have the same per-port control registers, but
there are slight differences between them:
MT7622 has more clocks than MT2712.
MT7622 has shared control registers which are used to enable ltssm and
aspm while MT2712 does not.

This patch adds host controller support for MT2712/MT7622.

Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
Signed-off-by: Honghui Zhang <honghui.zhang@xxxxxxxxxxxx>
---
drivers/pci/host/Kconfig | 5 +-
drivers/pci/host/pcie-mediatek.c | 462 ++++++++++++++++++++++++++++++++++++++-
2 files changed, 460 insertions(+), 7 deletions(-)

diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig
index 89d61c2..5b1ae9f 100644
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/host/Kconfig
@@ -182,14 +182,13 @@ config PCIE_ROCKCHIP

config PCIE_MEDIATEK
bool "MediaTek PCIe controller"
- depends on ARM && (ARCH_MEDIATEK || COMPILE_TEST)
+ depends on (ARM || ARM64) && (ARCH_MEDIATEK || COMPILE_TEST)
depends on OF
depends on PCI
select PCIEPORTBUS
help
Say Y here if you want to enable PCIe controller support on
- MT7623 series SoCs. There is one single root complex with 3 root
- ports available. Each port supports Gen2 lane x1.
+ MediaTek SoCs.

config PCIE_TANGO_SMP8759
bool "Tango SMP8759 PCIe controller (DANGEROUS)"
diff --git a/drivers/pci/host/pcie-mediatek.c b/drivers/pci/host/pcie-mediatek.c
index c649ab4..c96cd8f 100644
--- a/drivers/pci/host/pcie-mediatek.c
+++ b/drivers/pci/host/pcie-mediatek.c
@@ -3,6 +3,7 @@
*
* Copyright (c) 2017 MediaTek Inc.
* Author: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
+ * Honghui Zhang <honghui.zhang@xxxxxxxxxxxx>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -17,6 +18,8 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/iopoll.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
#include <linux/kernel.h>
#include <linux/of_address.h>
#include <linux/of_pci.h>
@@ -64,16 +67,75 @@
#define PCIE_FC_CREDIT_MASK (GENMASK(31, 31) | GENMASK(28, 16))
#define PCIE_FC_CREDIT_VAL(x) ((x) << 16)

+/* PCIe V2 share registers */
+#define PCIE_SYS_CFG_V2 0x0
+#define PCIE_CSR_LTSSM_EN(x) BIT(0 + (x) * 8)
+#define PCIE_CSR_ASPM_L1_EN(x) BIT(1 + (x) * 8)
+
+/* PCIe V2 per-port registers */
+#define PCIE_INT_MASK 0x420
+#define INTX_MASK GENMASK(19, 16)
+#define INTX_SHIFT 16
+#define INTX_NUM 4
+#define PCIE_INT_STATUS 0x424
+
+#define PCIE_AHB_TRANS_BASE0_L 0x438
+#define PCIE_AHB_TRANS_BASE0_H 0x43c
+#define AHB2PCIE_SIZE(x) ((x) & GENMASK(4, 0))
+#define PCIE_AXI_WINDOW0 0x448
+#define WIN_ENABLE BIT(7)
+
+/* PCIe V2 configuration transaction header */
+#define PCIE_CFG_HEADER0 0x460
+#define PCIE_CFG_HEADER1 0x464
+#define PCIE_CFG_HEADER2 0x468
+#define PCIE_CFG_WDATA 0x470
+#define PCIE_APP_TLP_REQ 0x488
+#define PCIE_CFG_RDATA 0x48c
+#define APP_CFG_REQ BIT(0)
+#define APP_CPL_STATUS GENMASK(7, 5)
+
+#define CFG_WRRD_TYPE_0 4
+#define CFG_WR_FMT 2
+#define CFG_RD_FMT 0
+
+#define CFG_DW0_LENGTH(length) ((length) & GENMASK(9, 0))
+#define CFG_DW0_TYPE(type) (((type) << 24) & GENMASK(28, 24))
+#define CFG_DW0_FMT(fmt) (((fmt) << 29) & GENMASK(31, 29))
+#define CFG_DW2_REGN(regn) ((regn) & GENMASK(11, 2))
+#define CFG_DW2_FUN(fun) (((fun) << 16) & GENMASK(18, 16))
+#define CFG_DW2_DEV(dev) (((dev) << 19) & GENMASK(23, 19))
+#define CFG_DW2_BUS(bus) (((bus) << 24) & GENMASK(31, 24))
+#define CFG_HEADER_DW0(type, fmt) \
+ (CFG_DW0_LENGTH(1) | CFG_DW0_TYPE(type) | CFG_DW0_FMT(fmt))
+#define CFG_HEADER_DW1(where, size) \
+ (GENMASK(((size) - 1), 0) << ((where) & 0x3))
+#define CFG_HEADER_DW2(regn, fun, dev, bus) \
+ (CFG_DW2_REGN(regn) | CFG_DW2_FUN(fun) | \
+ CFG_DW2_DEV(dev) | CFG_DW2_BUS(bus))
+
+#define PCIE_RST_CTRL 0x510
+#define PCIE_PHY_RSTB BIT(0)
+#define PCIE_PIPE_SRSTB BIT(1)
+#define PCIE_MAC_SRSTB BIT(2)
+#define PCIE_CRSTB BIT(3)
+#define PCIE_PERSTB BIT(8)
+#define PCIE_LINKDOWN_RST_EN GENMASK(15, 13)
+#define PCIE_LINK_STATUS_V2 0x804
+#define PCIE_PORT_LINKUP_V2 BIT(10)
+
struct mtk_pcie_port;

/**
* struct mtk_pcie_soc - differentiate between host generations
* @ops: pointer to configuration access functions
* @startup: pointer to controller setting functions
+ * @setup_irq: pointer to initialize IRQ functions
*/
struct mtk_pcie_soc {
struct pci_ops *ops;
int (*startup)(struct mtk_pcie_port *port);
+ int (*setup_irq)(struct mtk_pcie_port *port, struct device_node *node);
};

/**
@@ -82,10 +144,18 @@ struct mtk_pcie_soc {
* @list: port list
* @pcie: pointer to PCIe host info
* @reset: pointer to port reset control
- * @sys_ck: pointer to bus clock
- * @phy: pointer to phy control block
+ * @sys_ck: pointer to transaction/data link layer clock
+ * @ahb_ck: pointer to AHB slave interface operating clock for CSR access
+ * and RC initiated MMIO access
+ * @axi_ck: pointer to application layer MMIO channel operating clock
+ * @aux_ck: pointer to pe2_mac_bridge and pe2_mac_core operating clock
+ * when pcie_mac_ck/pcie_pipe_ck is turned off
+ * @obff_ck: pointer to OBFF functional block operating clock
+ * @pipe_ck: pointer to LTSSM and PHY/MAC layer operating clock
+ * @phy: pointer to PHY control block
* @lane: lane count
* @slot: port slot
+ * @irq_domain: legacy INTx IRQ domain
*/
struct mtk_pcie_port {
void __iomem *base;
@@ -93,9 +163,15 @@ struct mtk_pcie_port {
struct mtk_pcie *pcie;
struct reset_control *reset;
struct clk *sys_ck;
+ struct clk *ahb_ck;
+ struct clk *axi_ck;
+ struct clk *aux_ck;
+ struct clk *obff_ck;
+ struct clk *pipe_ck;
struct phy *phy;
u32 lane;
u32 slot;
+ struct irq_domain *irq_domain;
};

/**
@@ -156,6 +232,12 @@ static void mtk_pcie_put_resources(struct mtk_pcie *pcie)

list_for_each_entry_safe(port, tmp, &pcie->ports, list) {
phy_power_off(port->phy);
+ phy_exit(port->phy);
+ clk_disable_unprepare(port->pipe_ck);
+ clk_disable_unprepare(port->obff_ck);
+ clk_disable_unprepare(port->axi_ck);
+ clk_disable_unprepare(port->aux_ck);
+ clk_disable_unprepare(port->ahb_ck);
clk_disable_unprepare(port->sys_ck);
mtk_pcie_port_free(port);
}
@@ -163,6 +245,269 @@ static void mtk_pcie_put_resources(struct mtk_pcie *pcie)
mtk_pcie_subsys_powerdown(pcie);
}

+static int mtk_pcie_check_cfg_cpld(struct mtk_pcie_port *port)
+{
+ u32 val;
+ int err;
+
+ err = readl_poll_timeout_atomic(port->base + PCIE_APP_TLP_REQ, val,
+ !(val & APP_CFG_REQ), 10,
+ 100 * USEC_PER_MSEC);
+ if (err)
+ return PCIBIOS_SET_FAILED;
+
+ if (readl(port->base + PCIE_APP_TLP_REQ) & APP_CPL_STATUS)
+ return PCIBIOS_SET_FAILED;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int mtk_pcie_hw_rd_cfg(struct mtk_pcie_port *port, u32 bus, u32 devfn,
+ int where, int size, u32 *val)
+{
+ u32 tmp;
+
+ /* Write PCIe configuration transaction header for Cfgrd */
+ writel(CFG_HEADER_DW0(CFG_WRRD_TYPE_0, CFG_RD_FMT),
+ port->base + PCIE_CFG_HEADER0);
+ writel(CFG_HEADER_DW1(where, size), port->base + PCIE_CFG_HEADER1);
+ writel(CFG_HEADER_DW2(where, PCI_FUNC(devfn), PCI_SLOT(devfn), bus),
+ port->base + PCIE_CFG_HEADER2);
+
+ /* Trigger h/w to transmit Cfgrd TLP */
+ tmp = readl(port->base + PCIE_APP_TLP_REQ);
+ tmp |= APP_CFG_REQ;
+ writel(tmp, port->base + PCIE_APP_TLP_REQ);
+
+ /* Check completion status */
+ if (mtk_pcie_check_cfg_cpld(port))
+ return PCIBIOS_SET_FAILED;
+
+ /* Read cpld payload of Cfgrd */
+ *val = readl(port->base + PCIE_CFG_RDATA);
+
+ if (size == 1)
+ *val = (*val >> (8 * (where & 3))) & 0xff;
+ else if (size == 2)
+ *val = (*val >> (8 * (where & 3))) & 0xffff;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int mtk_pcie_hw_wr_cfg(struct mtk_pcie_port *port, u32 bus, u32 devfn,
+ int where, int size, u32 val)
+{
+ /* Write PCIe configuration transaction header for Cfgwr */
+ writel(CFG_HEADER_DW0(CFG_WRRD_TYPE_0, CFG_WR_FMT),
+ port->base + PCIE_CFG_HEADER0);
+ writel(CFG_HEADER_DW1(where, size), port->base + PCIE_CFG_HEADER1);
+ writel(CFG_HEADER_DW2(where, PCI_FUNC(devfn), PCI_SLOT(devfn), bus),
+ port->base + PCIE_CFG_HEADER2);
+
+ /* Write Cfgwr data */
+ val = val << 8 * (where & 3);
+ writel(val, port->base + PCIE_CFG_WDATA);
+
+ /* Trigger h/w to transmit Cfgwr TLP */
+ val = readl(port->base + PCIE_APP_TLP_REQ);
+ val |= APP_CFG_REQ;
+ writel(val, port->base + PCIE_APP_TLP_REQ);
+
+ /* Check completion status */
+ return mtk_pcie_check_cfg_cpld(port);
+}
+
+static struct mtk_pcie_port *mtk_pcie_find_port(struct pci_bus *bus,
+ unsigned int devfn)
+{
+ struct mtk_pcie *pcie = bus->sysdata;
+ struct mtk_pcie_port *port;
+
+ list_for_each_entry(port, &pcie->ports, list)
+ if (port->slot == PCI_SLOT(devfn))
+ return port;
+
+ return NULL;
+}
+
+static int mtk_pcie_config_read(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 *val)
+{
+ struct mtk_pcie_port *port;
+ u32 bn = bus->number;
+ int ret;
+
+ port = mtk_pcie_find_port(bus, devfn);
+ if (!port) {
+ *val = ~0;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ ret = mtk_pcie_hw_rd_cfg(port, bn, devfn, where, size, val);
+ if (ret)
+ *val = ~0;
+
+ return ret;
+}
+
+static int mtk_pcie_config_write(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 val)
+{
+ struct mtk_pcie_port *port;
+ u32 bn = bus->number;
+
+ port = mtk_pcie_find_port(bus, devfn);
+ if (!port)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ return mtk_pcie_hw_wr_cfg(port, bn, devfn, where, size, val);
+}
+
+static struct pci_ops mtk_pcie_ops_v2 = {
+ .read = mtk_pcie_config_read,
+ .write = mtk_pcie_config_write,
+};
+
+static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port)
+{
+ struct mtk_pcie *pcie = port->pcie;
+ struct resource *mem = &pcie->mem;
+ u32 val;
+ size_t size;
+ int err;
+
+ /* mt7622 platforms need to enable LTSSM and ASPM from PCIe subsys */
+ if (pcie->base) {
+ val = readl(pcie->base + PCIE_SYS_CFG_V2);
+ val |= PCIE_CSR_LTSSM_EN(port->slot) |
+ PCIE_CSR_ASPM_L1_EN(port->slot);
+ writel(val, pcie->base + PCIE_SYS_CFG_V2);
+ }
+
+ /* Assert all reset signals */
+ writel(0, port->base + PCIE_RST_CTRL);
+
+ /*
+ * Enable PCIe link down reset, if link status changed from link up to
+ * link down, this will reset MAC control registers and configuration
+ * space.
+ */
+ writel(PCIE_LINKDOWN_RST_EN, port->base + PCIE_RST_CTRL);
+
+ /* De-assert PHY, PE, PIPE, MAC and configuration reset */
+ val = readl(port->base + PCIE_RST_CTRL);
+ val |= PCIE_PHY_RSTB | PCIE_PERSTB | PCIE_PIPE_SRSTB |
+ PCIE_MAC_SRSTB | PCIE_CRSTB;
+ writel(val, port->base + PCIE_RST_CTRL);
+
+ /* 100ms timeout value should be enough for Gen1/2 training */
+ err = readl_poll_timeout(port->base + PCIE_LINK_STATUS_V2, val,
+ !!(val & PCIE_PORT_LINKUP_V2), 20,
+ 100 * USEC_PER_MSEC);
+ if (err)
+ return -ETIMEDOUT;
+
+ /* Set INTx mask */
+ val = readl(port->base + PCIE_INT_MASK);
+ val &= ~INTX_MASK;
+ writel(val, port->base + PCIE_INT_MASK);
+
+ /* Set AHB to PCIe translation windows */
+ size = mem->end - mem->start;
+ val = lower_32_bits(mem->start) | AHB2PCIE_SIZE(fls(size));
+ writel(val, port->base + PCIE_AHB_TRANS_BASE0_L);
+
+ val = upper_32_bits(mem->start);
+ writel(val, port->base + PCIE_AHB_TRANS_BASE0_H);
+
+ /* Set PCIe to AXI translation memory space.*/
+ val = fls(0xffffffff) | WIN_ENABLE;
+ writel(val, port->base + PCIE_AXI_WINDOW0);
+
+ return 0;
+}
+
+static int mtk_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
+ irq_hw_number_t hwirq)
+{
+ irq_set_chip_and_handler(irq, &dummy_irq_chip, handle_simple_irq);
+ irq_set_chip_data(irq, domain->host_data);
+
+ return 0;
+}
+
+static const struct irq_domain_ops intx_domain_ops = {
+ .map = mtk_pcie_intx_map,
+};
+
+static int mtk_pcie_init_irq_domain(struct mtk_pcie_port *port,
+ struct device_node *node)
+{
+ struct device *dev = port->pcie->dev;
+ struct device_node *pcie_intc_node;
+
+ /* Setup INTx */
+ pcie_intc_node = of_get_next_child(node, NULL);
+ if (!pcie_intc_node) {
+ dev_err(dev, "No PCIe Intc node found\n");
+ return PTR_ERR(pcie_intc_node);
+ }
+
+ port->irq_domain = irq_domain_add_linear(pcie_intc_node, INTX_NUM,
+ &intx_domain_ops, port);
+ if (!port->irq_domain) {
+ dev_err(dev, "Failed to get INTx IRQ domain\n");
+ return PTR_ERR(port->irq_domain);
+ }
+
+ return 0;
+}
+
+static irqreturn_t mtk_pcie_intr_handler(int irq, void *data)
+{
+ struct mtk_pcie_port *port = (struct mtk_pcie_port *)data;
+ unsigned long status;
+ u32 virq;
+ u32 bit = INTX_SHIFT;
+
+ while ((status = readl(port->base + PCIE_INT_STATUS)) & INTX_MASK) {
+ for_each_set_bit_from(bit, &status, INTX_NUM + INTX_SHIFT) {
+ /* Clear the INTx */
+ writel(1 << bit, port->base + PCIE_INT_STATUS);
+ virq = irq_find_mapping(port->irq_domain,
+ bit - INTX_SHIFT);
+ generic_handle_irq(virq);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int mtk_pcie_setup_irq(struct mtk_pcie_port *port,
+ struct device_node *node)
+{
+ struct mtk_pcie *pcie = port->pcie;
+ struct device *dev = pcie->dev;
+ struct platform_device *pdev = to_platform_device(dev);
+ int err, irq;
+
+ irq = platform_get_irq(pdev, port->slot);
+ err = devm_request_irq(dev, irq, mtk_pcie_intr_handler,
+ IRQF_SHARED, "mtk-pcie", port);
+ if (err) {
+ dev_err(dev, "unable to request IRQ %d\n", irq);
+ return err;
+ }
+
+ err = mtk_pcie_init_irq_domain(port, node);
+ if (err) {
+ dev_err(dev, "failed to init PCIe legacy IRQ domain\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
static void __iomem *mtk_pcie_map_bus(struct pci_bus *bus,
unsigned int devfn, int where)
{
@@ -249,13 +594,49 @@ static void mtk_pcie_enable_port(struct mtk_pcie_port *port)

err = clk_prepare_enable(port->sys_ck);
if (err) {
- dev_err(dev, "failed to enable port%d clock\n", port->slot);
+ dev_err(dev, "failed to enable sys_ck%d clock\n", port->slot);
goto err_sys_clk;
}

+ err = clk_prepare_enable(port->ahb_ck);
+ if (err) {
+ dev_err(dev, "failed to enable ahb_ck%d\n", port->slot);
+ goto err_ahb_clk;
+ }
+
+ err = clk_prepare_enable(port->aux_ck);
+ if (err) {
+ dev_err(dev, "failed to enable aux_ck%d\n", port->slot);
+ goto err_aux_clk;
+ }
+
+ err = clk_prepare_enable(port->axi_ck);
+ if (err) {
+ dev_err(dev, "failed to enable axi_ck%d\n", port->slot);
+ goto err_axi_clk;
+ }
+
+ err = clk_prepare_enable(port->obff_ck);
+ if (err) {
+ dev_err(dev, "failed to enable obff_ck%d\n", port->slot);
+ goto err_obff_clk;
+ }
+
+ err = clk_prepare_enable(port->pipe_ck);
+ if (err) {
+ dev_err(dev, "failed to enable pipe_ck%d\n", port->slot);
+ goto err_pipe_clk;
+ }
+
reset_control_assert(port->reset);
reset_control_deassert(port->reset);

+ err = phy_init(port->phy);
+ if (err) {
+ dev_err(dev, "failed to initialize port%d phy\n", port->slot);
+ goto err_phy_init;
+ }
+
err = phy_power_on(port->phy);
if (err) {
dev_err(dev, "failed to power on port%d phy\n", port->slot);
@@ -269,6 +650,18 @@ static void mtk_pcie_enable_port(struct mtk_pcie_port *port)

phy_power_off(port->phy);
err_phy_on:
+ phy_exit(port->phy);
+err_phy_init:
+ clk_disable_unprepare(port->pipe_ck);
+err_pipe_clk:
+ clk_disable_unprepare(port->obff_ck);
+err_obff_clk:
+ clk_disable_unprepare(port->axi_ck);
+err_axi_clk:
+ clk_disable_unprepare(port->aux_ck);
+err_aux_clk:
+ clk_disable_unprepare(port->ahb_ck);
+err_ahb_clk:
clk_disable_unprepare(port->sys_ck);
err_sys_clk:
mtk_pcie_port_free(port);
@@ -306,10 +699,56 @@ static int mtk_pcie_parse_port(struct mtk_pcie *pcie,
snprintf(name, sizeof(name), "sys_ck%d", slot);
port->sys_ck = devm_clk_get(dev, name);
if (IS_ERR(port->sys_ck)) {
- dev_err(dev, "failed to get port%d clock\n", slot);
+ dev_err(dev, "failed to get sys_ck%d clock\n", slot);
return PTR_ERR(port->sys_ck);
}

+ /* sys_ck might be divided into the following parts in some chips */
+ snprintf(name, sizeof(name), "ahb_ck%d", slot);
+ port->ahb_ck = devm_clk_get(dev, name);
+ if (IS_ERR(port->ahb_ck)) {
+ if (PTR_ERR(port->ahb_ck) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ port->ahb_ck = NULL;
+ }
+
+ snprintf(name, sizeof(name), "axi_ck%d", slot);
+ port->axi_ck = devm_clk_get(dev, name);
+ if (IS_ERR(port->axi_ck)) {
+ if (PTR_ERR(port->axi_ck) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ port->axi_ck = NULL;
+ }
+
+ snprintf(name, sizeof(name), "aux_ck%d", slot);
+ port->aux_ck = devm_clk_get(dev, name);
+ if (IS_ERR(port->aux_ck)) {
+ if (PTR_ERR(port->aux_ck) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ port->aux_ck = NULL;
+ }
+
+ snprintf(name, sizeof(name), "obff_ck%d", slot);
+ port->obff_ck = devm_clk_get(dev, name);
+ if (IS_ERR(port->obff_ck)) {
+ if (PTR_ERR(port->obff_ck) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ port->obff_ck = NULL;
+ }
+
+ snprintf(name, sizeof(name), "pipe_ck%d", slot);
+ port->pipe_ck = devm_clk_get(dev, name);
+ if (IS_ERR(port->pipe_ck)) {
+ if (PTR_ERR(port->pipe_ck) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ port->pipe_ck = NULL;
+ }
+
snprintf(name, sizeof(name), "pcie-rst%d", slot);
port->reset = devm_reset_control_get_optional_exclusive(dev, name);
if (PTR_ERR(port->reset) == -EPROBE_DEFER)
@@ -324,6 +763,12 @@ static int mtk_pcie_parse_port(struct mtk_pcie *pcie,
port->slot = slot;
port->pcie = pcie;

+ if (pcie->soc->setup_irq) {
+ err = pcie->soc->setup_irq(port, node);
+ if (err)
+ return err;
+ }
+
INIT_LIST_HEAD(&port->list);
list_add_tail(&port->list, &pcie->ports);

@@ -493,6 +938,7 @@ static int mtk_pcie_register_host(struct pci_host_bridge *host)
host->ops = pcie->soc->ops;
host->map_irq = of_irq_parse_and_map_pci;
host->swizzle_irq = pci_common_swizzle;
+ host->sysdata = pcie;

err = pci_scan_root_bus_bridge(host);
if (err < 0)
@@ -553,9 +999,17 @@ static const struct mtk_pcie_soc mtk_pcie_soc_v1 = {
.startup = mtk_pcie_startup_port,
};

+static const struct mtk_pcie_soc mtk_pcie_soc_v2 = {
+ .ops = &mtk_pcie_ops_v2,
+ .startup = mtk_pcie_startup_port_v2,
+ .setup_irq = mtk_pcie_setup_irq,
+};
+
static const struct of_device_id mtk_pcie_ids[] = {
{ .compatible = "mediatek,mt2701-pcie", .data = &mtk_pcie_soc_v1 },
{ .compatible = "mediatek,mt7623-pcie", .data = &mtk_pcie_soc_v1 },
+ { .compatible = "mediatek,mt2712-pcie", .data = &mtk_pcie_soc_v2 },
+ { .compatible = "mediatek,mt7622-pcie", .data = &mtk_pcie_soc_v2 },
{},
};

--
2.6.4